body {
    background-color: #fff;
    font-size: 14px;
    height: 1600px;
}

.container {
    width: 1200px;
    margin: 0 auto;
}

.fl {
    float: left;
}

.fr {
    float: right;
}

.clearfix:after {
    visibility: hidden;
    clear: both;
    display: block;
    content: ".";
    height: 0
}